Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2019	Oct. 31, 2018
Current assets:
Cash and cash equivalents	$ 668,810	$ 745,423
Short-term investments	119,143	148,981
Accounts receivable, net of allowance for doubtful accounts of $17.2 million and $17.4 million as of January 31, 2019 and October 31, 2018, respectively.	761,186	786,502
Inventories	323,106	262,751
Prepaid expenses and other	217,422	198,945
Total current assets	2,089,667	2,142,602
Long-term investments	0	58,970
Equipment, building, furniture and fixtures, net	288,713	292,067
Goodwill	297,968	297,968
Other intangible assets, net	139,005	148,225
Deferred tax asset, net	728,139	745,039
Other long-term assets	74,614	71,652
Total assets	3,618,106	3,756,523
Current liabilities:
Accounts payable	335,547	340,582
Accrued liabilities and other short-term obligations	272,712	340,075
Deferred revenue	85,501	111,134
Current portion of long-term debt	7,000	7,000
Debt conversion liability	0	164,212
Total current liabilities	700,760	963,003
Long-term deferred revenue	50,640	58,323
Other long-term obligations	127,462	119,413
Long-term debt, net	684,939	686,450
Total liabilities	1,563,801	1,827,189
Commitments and contingencies (Note 19)
Stockholders’ equity:
Preferred stock – par value $0.01; 20,000,000 shares authorized; zero shares issued and outstanding	0	0
Common stock – par value $0.01; 290,000,000 shares authorized; 156,336,210 and 154,318,531 shares issued and outstanding	1,563	1,543
Additional paid-in capital	6,927,613	6,881,223
Accumulated other comprehensive loss	(10,640)	(5,780)
Accumulated deficit	(4,864,231)	(4,947,652)
Total stockholders’ equity	2,054,305	1,929,334
Total liabilities and stockholders’ equity	$ 3,618,106	$ 3,756,523